Nix Packages Mcp

io.github.mrfentmenPublished by GitHub account mrfentmenv1.0.0Updated Oct 24, 2026

Nix package search from nixpkgs. No key required.

VerifiedSTDIODesktop onlyDeveloper Tools

Overview

AI-generated overview

Local MCP server that lets an assistant search Nix packages in nixpkgs, with no API key required.

What you can do
  • Search nixpkgs for packages by name or query and return matching package entries.
  • Look up package information from the nixpkgs package set to help with Nix installs and configuration.
  • No tool list is published, so the exact commands and result fields are not documented in the supplied material.
When to use it
Useful when working with Nix or NixOS and you want the assistant to find the right package name or check whether something exists in nixpkgs without leaving the chat.
Requirements
Runs as a local process over stdio, installed from the npm package nix-packages-mcp, so Node.js and npm are needed. No authentication, environment variables or headers are declared. Desktop-only; not available as a web executable.
Before you install
Package results come from nixpkgs and should be verified before installing or adding anything to a system configuration. No credentials are requested, and no write actions are described.

Installation

In SourceWeft

  1. Open Nix Packages Mcp in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

This repository has no README.

Tools

0
SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

1
  1. v1.0.0LatestSep 22, 2026

Score

25% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 days25 pts

    Keep the endpoint answering the MCP handshake; SourceWeft probes it every 30 days.

  • Auth declared10 pts

    Declare the credential headers in the registry entry, or keep the endpoint answering the probe so its auth can be classified.

  • Tools listed15 pts

    Answer tools/list without a credential, or ship a package that starts in a sandbox without one.

  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts

    Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.

  • License10 pts

    Declare a license in the repository or the registry entry.